Do you need a Marketing Agency in Cedar Rapids, IA? LocalSpark has found the top internet marketing agencies in Cedar Rapids. In the current aggressive market, it is important to seek out a skilled marketing agency if your business wants to be competitive. Marketing agencies help clients with web design, print materials, SEO, logos, branding, and various other projects that improve your business’ image and reputation. Below, we have put together a list of the best Cedar Rapids, IA, Marketing Agencies.